Analysis of Tensile Tests and Microstructures of ST. 37 Steel Undergoing Carburizing Process Using Coal Powder

Abstract Steel is one of the most widely used metals in engineering. There are several things that make this material by humans, among others, amount quite abundant nature, usually still form iron ore or pure iron. It has good mechanical properties (strength and ductility), easy to work with either casting method machining so it can be made according human wishes, price relatively cheap. This study aims determine tensile strength microstructure ST. 37 steel which undergoes a process carburizing using coal powder variations two temperatures, namely 550 °C 900 °C. The research experimental. first experiment testing second observing 37, been through heating temperature test results showed higher given specimen, greater value pull-yielding, maximum, fracture occurs specimen. undergone than not process. after shows applied during process, atoms contained therein will change temperature.